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Does Mac OS X allow for the creation of iso files (similar to that of Windows) and if so can they then be run on a virtual drive within the operating system ?

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Can you elaborate on what you are trying to do? What do you want to run? Or do you just want to mount the images? – Gerry Nov 24 '12 at 10:32
In windows u can convert programs to iso files to free up hard drive space which can then be run (mounted) via a virtual clone drive ? I'm not trying to do it at the moment just wondered if it can be achieved. I was thinking that equivalent of an iso file on a mac is a dmg image ? – Simon Nov 24 '12 at 10:36
@Simon - in that case why not just put the app onto another drive? – Mark Nov 24 '12 at 13:22

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The usual format for this on OS X is a disk image (aka .dmg). To create them you can use Disk Utility.app (in /Appications/Utilities):

  • insert the DVD you want to create the image from
  • start Disk Utility
  • select "New Image" from the toolbar and pick the DVD as a source. The .dmg can be stored wherever you want to

To open/use it afterwards, just doubleclick it in Finder.

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Excellent answer :) – Simon Nov 24 '12 at 10:40

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